Now that my 2000 Kodiak is running well after the carb rebuild, I’ve turned my attention to my 2001 400. I bought it used – generally it runs great but it overheats on really hot days.
I pulled out the fan and found it was no good so I put a new high flow fan in. Could now hear the fan run, but it would kick off after about 20 seconds and then only come on for an instant about every 5-10 seconds – not enough air to cool the engine and radiator fluid. I then replaced the circuit breaker and the thermo switch in the radiator. Still only comes on for 20 seconds initially and then cycles on and off every 5-10 seconds. I am guessing it will still overheat if run hard enough on a hot day.
My 550 and other 400 both run the fan full speed when the engine calls for it until the engine and radiator fluid are cooled.
Now that my 2000 Kodiak is running well after the carb rebuild, I’ve turned my attention to my 2001 400. I bought it used – generally it runs great but it overheats on really hot days.
I pulled out the fan and found it was no good so I put a new high flow fan in. Could now hear the fan run, but it would kick off after about 20 seconds and then only come on for an instant about every 5-10 seconds – not enough air to cool the engine and radiator fluid. I then replaced the circuit breaker and the thermo switch in the radiator. Still only comes on for 20 seconds initially and then cycles on and off every 5-10 seconds. I am guessing it will still overheat if run hard enough on a hot day.
My 550 and other 400 both run the fan full speed when the engine calls for it until the engine and radiator fluid are cooled.
